Invention Grant
- Patent Title: Method for starting a brushless sensorless DC motor
- Patent Title (中): 启动无刷无传感器直流电机的方法
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Application No.: US12495329Application Date: 2009-06-30
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Publication No.: US08148928B2Publication Date: 2012-04-03
- Inventor: François Laulanet , Hendrik Paul Judith De Vloed
- Applicant: François Laulanet , Hendrik Paul Judith De Vloed
- Applicant Address: US AZ Phoenix
- Assignee: Semiconductor Components Industries, LLC
- Current Assignee: Semiconductor Components Industries, LLC
- Current Assignee Address: US AZ Phoenix
- Agent Rennie William Dover
- Main IPC: H02P6/04
- IPC: H02P6/04

Abstract:
A method for starting a brushless DC motor. A rotor is aligned with a stator in accordance with a predetermined phase. After alignment, the rotor is positioned in accordance with another phase, two phases are skipped, a timer is set to a first count time, and the rotor is aligned with the stator in accordance with a third phase. Then the timer is restarted and the rotor is aligned with the stator in accordance with a fourth phase. After a first delay, first back electromotive force value is stored. The timer is stopped when the first back electromotive force value substantially equals a peak amplitude of opposite polarity. The timer is updated to a second count time that is substantially equal to a time at which the second timer was stopped. The process is repeated until the rotor has a position and a velocity that are suitable for normal operation.
Public/Granted literature
- US20100327788A1 METHOD FOR STARTING A BRUSHLESS SENSORLESS DC MOTOR Public/Granted day:2010-12-30
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